| /* |
| * |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| * |
| */ |
| package org.apache.qpid.server.model; |
| |
| import java.lang.reflect.InvocationTargetException; |
| import java.lang.reflect.Method; |
| import java.lang.reflect.Modifier; |
| import java.lang.reflect.Type; |
| import java.util.Arrays; |
| import java.util.Collections; |
| import java.util.HashSet; |
| import java.util.LinkedHashSet; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Set; |
| |
| import org.apache.qpid.server.util.ServerScopedRuntimeException; |
| |
| public class ConfiguredObjectInjectedOperation<C extends ConfiguredObject<?>> implements ConfiguredObjectOperation<C>, InjectedAttributeStatisticOrOperation<C> |
| { |
| private final Method _operation; |
| private final List<OperationParameter> _params; |
| private final Set<String> _validNames; |
| private final TypeValidator _validator; |
| private final String _name; |
| private final String _description; |
| private final boolean _nonModifying; |
| private final boolean _secure; |
| private final Object[] _staticParams; |
| private final String _secureParam; |
| |
| public ConfiguredObjectInjectedOperation(final String name, |
| final String description, |
| final boolean nonModifying, |
| final boolean secure, |
| final String secureParam, |
| final OperationParameter[] parameters, |
| final Method operation, |
| final Object[] staticParams, |
| final TypeValidator validator) |
| { |
| _operation = operation; |
| _name = name; |
| _description = description; |
| _nonModifying = nonModifying; |
| _secure = secure; |
| _validator = validator; |
| _staticParams = staticParams == null ? new Object[0] : staticParams; |
| _secureParam = secureParam; |
| |
| _params = parameters == null ? Collections.<OperationParameter>emptyList() : Arrays.asList(parameters); |
| |
| Set<String> validNames = new LinkedHashSet<>(); |
| for(OperationParameter parameter : _params) |
| { |
| validNames.add(parameter.getName()); |
| } |
| |
| _validNames = Collections.unmodifiableSet(validNames); |
| |
| final Class<?>[] opParameterTypes = operation.getParameterTypes(); |
| |
| if(!(Modifier.isStatic(operation.getModifiers()) |
| && Modifier.isPublic(operation.getModifiers()) |
| && opParameterTypes.length == _params.size() + _staticParams.length + 1 |
| && ConfiguredObject.class.isAssignableFrom(opParameterTypes[0]))) |
| { |
| throw new IllegalArgumentException("Passed method must be public and static. The first parameter must derive from ConfiguredObject, and the rest of the parameters must match the passed in specifications"); |
| } |
| |
| for(int i = 0; i < _staticParams.length; i++) |
| { |
| if(opParameterTypes[i+1].isPrimitive() && _staticParams[i] == null) |
| { |
| throw new IllegalArgumentException("Static parameter has null value, but the " + opParameterTypes[i+1].getSimpleName() + " type is a primitive"); |
| } |
| if(!AttributeValueConverter.convertPrimitiveToBoxed(opParameterTypes[i+1]).isAssignableFrom(_staticParams[i].getClass())) |
| { |
| throw new IllegalArgumentException("Static parameter cannot be assigned value as it is of incompatible type"); |
| } |
| } |
| |
| int paramId = 1+_staticParams.length; |
| for(OperationParameter parameter : _params) |
| { |
| if(!opParameterTypes[paramId].isAssignableFrom(parameter.getType())) |
| { |
| throw new IllegalArgumentException("Type for parameter " + parameter.getName() + " does not match"); |
| } |
| paramId++; |
| } |
| |
| } |
| |
| @Override |
| public String getName() |
| { |
| return _name; |
| } |
| |
| @Override |
| public List<OperationParameter> getParameters() |
| { |
| return _params; |
| } |
| |
| @Override |
| public Object perform(C subject, Map<String, Object> parameters) |
| { |
| if(!_validator.appliesToType((Class<? extends ConfiguredObject<?>>) subject.getClass())) |
| { |
| throw new IllegalArgumentException("Operation " |
| + _operation.getName() |
| + " cannot be used on an object of type " |
| + subject.getClass().getSimpleName()); |
| } |
| else |
| { |
| |
| Set<String> providedNames = new HashSet<>(parameters.keySet()); |
| providedNames.removeAll(_validNames); |
| if (!providedNames.isEmpty()) |
| { |
| throw new IllegalArgumentException("Parameters " + providedNames + " are not accepted by " + getName()); |
| } |
| Object[] paramValues = new Object[1+_staticParams.length+_params.size()]; |
| paramValues[0] = subject; |
| |
| |
| for(int i = 0; i < _staticParams.length; i++) |
| { |
| paramValues[i+1] = _staticParams[i]; |
| } |
| |
| for (int i = 0; i < _params.size(); i++) |
| { |
| paramValues[i+1+_staticParams.length] = getParameterValue(subject, parameters, _params.get(i)); |
| } |
| try |
| { |
| return _operation.invoke(null, paramValues); |
| } |
| catch (IllegalAccessException e) |
| { |
| throw new ServerScopedRuntimeException(e); |
| } |
| catch (InvocationTargetException e) |
| { |
| if (e.getCause() instanceof RuntimeException) |
| { |
| throw (RuntimeException) e.getCause(); |
| } |
| else if (e.getCause() instanceof Error) |
| { |
| throw (Error) e.getCause(); |
| } |
| else |
| { |
| throw new ServerScopedRuntimeException(e); |
| } |
| } |
| } |
| } |
| |
| private Object getParameterValue(final C subject, final Map<String, Object> parameters, final OperationParameter param) |
| { |
| final Object convertedVal; |
| Object providedVal; |
| if (parameters.containsKey(param.getName())) |
| { |
| providedVal = parameters.get(param.getName()); |
| } |
| else if (!"".equals(param.getDefaultValue())) |
| { |
| providedVal = param.getDefaultValue(); |
| } |
| else |
| { |
| providedVal = null; |
| } |
| if (providedVal == null && param.isMandatory()) |
| { |
| throw new IllegalArgumentException(String.format("Parameter '%s' of operation %s in %s requires a non-null value", |
| param.getName(), |
| _operation.getName(), |
| _operation.getDeclaringClass().getSimpleName())); |
| } |
| |
| final AttributeValueConverter<?> converter = |
| AttributeValueConverter.getConverter(AttributeValueConverter.convertPrimitiveToBoxed(param.getType()), |
| param.getGenericType()); |
| try |
| { |
| convertedVal = converter.convert(providedVal, subject); |
| |
| } |
| catch (IllegalArgumentException e) |
| { |
| throw new IllegalArgumentException(e.getMessage() |
| + " for parameter '" |
| + param.getName() |
| + "' in " |
| + _operation.getDeclaringClass().getSimpleName() |
| + "." |
| + _operation.getName() |
| + "(...) operation", e.getCause()); |
| } |
| return convertedVal; |
| } |
| |
| @Override |
| public boolean hasSameParameters(final ConfiguredObjectOperation<?> other) |
| { |
| final List<OperationParameter> otherParams = other.getParameters(); |
| if(_params.size() == otherParams.size()) |
| { |
| for(int i = 0; i < _params.size(); i++) |
| { |
| if(!_params.get(i).isCompatible(otherParams.get(i))) |
| { |
| return false; |
| } |
| } |
| return true; |
| } |
| else |
| { |
| return false; |
| } |
| } |
| |
| @Override |
| public Class<?> getReturnType() |
| { |
| return _operation.getReturnType(); |
| } |
| |
| @Override |
| public String getDescription() |
| { |
| return _description; |
| } |
| |
| @Override |
| public boolean isNonModifying() |
| { |
| return _nonModifying; |
| } |
| |
| @Override |
| public boolean isAssociateAsIfChildren() |
| { |
| return false; |
| } |
| |
| @Override |
| public boolean isSecure(final C subject, final Map<String, Object> arguments) |
| { |
| return _secure || requiresSecure(subject, arguments); |
| } |
| |
| private boolean requiresSecure(C subject, final Map<String, Object> arguments) |
| { |
| if(_secureParam != null && !"".equals(_secureParam)) |
| { |
| for (OperationParameter param : _params) |
| { |
| if (_secureParam.equals(param.getName())) |
| { |
| Object value = getParameterValue(subject, arguments, param); |
| if (value instanceof Boolean) |
| { |
| return (Boolean) value; |
| } |
| else |
| { |
| return value != null; |
| } |
| } |
| } |
| } |
| return false; |
| } |
| |
| |
| |
| |
| @Override |
| public Type getGenericReturnType() |
| { |
| return _operation.getGenericReturnType(); |
| } |
| |
| @Override |
| public boolean appliesToConfiguredObjectType(final Class<? extends ConfiguredObject<?>> type) |
| { |
| return _validator.appliesToType(type); |
| } |
| } |